I've been looking into the same thing. and I've found a few universities which have student health insurance that specifically covered transgender surgeries. the one I'm looking into is at Portland State University. But their Supplemental Insurance could cost $1000-$2000 per term. And insurance covered 80% of surgery costs. So I'm trying to decide if it's actually saving anything.
"The student must also be able to have certified by two providers, one of which must possess a doctorate degree, that they have successfully lived and worked within the desired gender roll full time for at least 12 months and has also received at least 12 months of continuous hormonal sex reassignment therapy. Office visits to establish these requirements are covered under the basic health insurance offered by the university."